* Re: [PATCH 1/2][Modulo-sched] Fix the direction of the scheduling window
[not found] <OF00E1B419.C8031571-ONC225736D.004CEA3F-C2257399.004BCE3D@LocalDomain>
@ 2007-11-21 17:24 ` Ayal Zaks
0 siblings, 0 replies; 6+ messages in thread
From: Ayal Zaks @ 2007-11-21 17:24 UTC (permalink / raw)
To: Revital1 Eres; +Cc: Andrey Belevantsev, Alexander Monakov, gcc-patches
Revital1 Eres/Haifa/IBM wrote on 20/11/2007 15:47:59:
> Hello,
>
> When determining the scheduling window of a node all types of edges are
> taken into account. Currently when a node has both predecessors and
> successors it will be set close to it's predecessors. In fact it can
> be that a node has only one successor with true dep edge but it will be
> scheduled close to it's allegedly predecessor; because of the anti-dep
> edge between the two nodes. Trying to avoid this confusion and reduce
the
> life range of registers we choose to set the scheduled node close to it's
> predecessors or close to it's successors based on true deps edges only.
>
> This change makes SMS succeed on the attached testcase with
-funroll-loops
> on SPU. The testcase was provided by Vladimir.
>
> Bootstrapped and tested together with the follow on patch (2/2) on ppc,
> SPU and x86 with no new regressions.
>
> :ADDPATCH modulo-sched:
>
> OK for mainline?
Yes, with minor comments below.
Note that it may be better to set the directions (step = 1/-1) once when
fixing the order of nodes, instead of counting all true register deps
repeatedly every time we try to schedule a node, but otoh we have to
traverse all succs and preds to compute the window anyhow.
Ayal.
>
> Thanks,
> Revital
>
> 2007-11-20 Ayal Zaks <zaks@il.ibm.com>
> Revital Eres <eres@il.ibm.com>
>
> * modulo-sched.c (get_sched_window): Fix the direction of the
> scheduling window and add dump info.
>
> testsuite:
>
> 2007-11-20 Vladimir Yanovsky <yanov@il.ibm.com>
>
> * gcc.dg/sms-3.c: New testcase.
>
attachment "patch_win_dir_again.txt":
> Index: modulo-sched.c
> ===================================================================
> --- modulo-sched.c (revision 129721)
> +++ modulo-sched.c (working copy)
> @@ -1344,8 +1344,8 @@
> MAX (early_start, p_st + e->latency - (e->distance *
ii));
>
> if (dump_file)
> - fprintf (dump_file, "pred st = %d; early_start = %d; ",
p_st,
> - early_start);
> + fprintf (dump_file, "pred st = %d; early_start = %d; "
> + " latency: %d", p_st, early_start, e->latency);
Not sure what's the proper way to split a string; the following looks
better I think:
+ fprintf (dump_file,
+ "pred st = %d; early_start = %d; latency: %d",
+ p_st, early_start, e->latency);
>
> if (e->data_type == MEM_DEP)
> end = MIN (end, SCHED_TIME (v_node) + ii - 1);
> @@ -1355,6 +1355,7 @@
> }
> start = early_start;
> end = MIN (end, early_start + ii);
> + /* Schedule the node close to it's processors. */
^^^^^^^^^^
predecessors
> step = 1;
>
> if (dump_file)
> @@ -1391,8 +1392,8 @@
> s_st - e->latency + (e->distance * ii));
>
> if (dump_file)
> - fprintf (dump_file, "succ st = %d; late_start = %d;",
s_st,
> - late_start);
> + fprintf (dump_file, "succ st = %d; late_start = %d;"
> + " latency = %d", s_st, late_start, e->latency);
Same as above.
>
> if (e->data_type == MEM_DEP)
> end = MAX (end, SCHED_TIME (v_node) - ii + 1);
> @@ -1406,6 +1407,7 @@
> }
> start = late_start;
> end = MAX (end, late_start - ii);
> + /* Schedule the node close to it's successors. */
> step = -1;
>
> if (dump_file)
> @@ -1419,6 +1421,8 @@
> {
> int early_start = INT_MIN;
> int late_start = INT_MAX;
> + int count_preds = 0;
> + int count_succs = 0;
>
> start = INT_MIN;
> end = INT_MAX;
> @@ -1446,9 +1450,12 @@
> - (e->distance * ii));
>
> if (dump_file)
> - fprintf (dump_file, "pred st = %d; early_start = %d;",
p_st,
> - early_start);
> + fprintf (dump_file, "pred st = %d; early_start = %d;"
> + " latency = %d", p_st, early_start,
e->latency);
Same as above.
>
> + if (e->type == TRUE_DEP && e->data_type == REG_DEP)
> + count_preds++;
> +
> if (e->data_type == MEM_DEP)
> end = MIN (end, SCHED_TIME (v_node) + ii - 1);
> }
> @@ -1479,10 +1486,13 @@
> s_st - e->latency
> + (e->distance * ii));
>
> - if (dump_file)
> - fprintf (dump_file, "succ st = %d; late_start = %d;",
s_st,
> - late_start);
> + if (dump_file)
> + fprintf (dump_file, "succ st = %d; late_start = %d;"
> + " latency = %d", s_st, late_start, e->latency);
Same as above.
>
> + if (e->type == TRUE_DEP && e->data_type == REG_DEP)
> + count_succs++;
> +
> if (e->data_type == MEM_DEP)
> start = MAX (start, SCHED_TIME (v_node) - ii + 1);
> }
> @@ -1493,6 +1503,16 @@
> start = MAX (start, early_start);
> end = MIN (end, MIN (early_start + ii, late_start + 1));
> step = 1;
> + /* If there are more successors than processors schedule the
^^^^^^^^^^
> + node close to it's successors. */
> + if (count_succs >= count_preds)
> + {
> + int old_start = start;
> +
> + start = end - 1;
> + end = old_start - 1;
> + step = -1;
> + }
> }
> else /* psp is empty && pss is empty. */
> {
attachment "sms-3.c.txt":
> /* { dg-do compile } */
> /* { dg-options "-O2 -fmodulo-sched -funroll-loops -dm" } */
>
> int X[100];
> int Y[100];
>
> int
> foo (int len, long *result)
> {
> int i;
>
> len = 1000;
> long res = *result;
> for (i = 0; i < len; i++)
> res += X[i] * Y[i];
>
> *result = res;
> }
>
> /* { dg-final { cleanup-rtl-dump "sms" } } */
Better check that result is correct on some data, in addition to the fact
that the loop is sms'ed.
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH 1/2][Modulo-sched] Fix the direction of the scheduling window
[not found] <OFF029C83D.426DE8BE-ONC225739B.0031BAF0-C22573A1.0030FD7A@LocalDomain>
@ 2007-11-30 22:19 ` Ayal Zaks
0 siblings, 0 replies; 6+ messages in thread
From: Ayal Zaks @ 2007-11-30 22:19 UTC (permalink / raw)
To: Revital1 Eres; +Cc: Andrey Belevantsev, Alexander Monakov, gcc-patches
Revital1 Eres/Haifa/IBM wrote on 28/11/2007 10:55:06:
> Hello,
>
> Thanks for the comments. Attached is the fixed version.
>
> > attachment "sms-3.c.txt":
> >
> > > /* { dg-do compile } */
> > > /* { dg-options "-O2 -fmodulo-sched -funroll-loops -dm" } */
> > >
> > > int X[100];
> > > int Y[100];
> > >
> > > int;
> > > foo (int len, long *result)
> > > {
> > > int i;
> > >
> > > len = 1000;
> > > long res = *result;
> > > for (i = 0; i < len; i++)
> > > res += X[i] * Y[i];
> > >
> > > *result = res;
> > > }>
> > >
> > > /* { dg-final { cleanup-rtl-dump "sms" } } */
> >
> > Better check that result is correct on some data, in addition to the
fact that
> > the loop is sms'ed.
>
> Done.
>
> Re-tested on powerpc64-linux and SPU together with patch 2/2.
> OK for mainline?
>
OK.
Just a typo: better call foo (6, 3) so that res will reach 601.
Ayal.
> Revital
>
> 2007-11-28 Ayal Zaks <zaks@il.ibm.com>
> Revital Eres <eres@il.ibm.com>
>
> * modulo-sched.c (get_sched_window): Fix the direction of the
> scheduling window and add dump info.
>
> testsuite:
>
> 2007-11-27 Vladimir Yanovsky <yanov@il.ibm.com>
>
> * gcc.dg/sms-3.c: New testcase.
>
>
> [attachment "sms-3.c.txt" deleted by Ayal Zaks/Haifa/IBM] [attachment
> "patch_1_2_28.txt" deleted by Ayal Zaks/Haifa/IBM]
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH 1/2][Modulo-sched] Fix the direction of the scheduling window
[not found] <OF6C5E5F37.898CB82F-ONC225739A.00535CD6-C225739A.0055D0E0@LocalDomain>
2007-11-21 18:33 ` Revital1 Eres
@ 2007-11-28 14:17 ` Revital1 Eres
1 sibling, 0 replies; 6+ messages in thread
From: Revital1 Eres @ 2007-11-28 14:17 UTC (permalink / raw)
To: Ayal Zaks; +Cc: Andrey Belevantsev, Alexander Monakov, gcc-patches
[-- Attachment #1: Type: text/plain, Size: 1062 bytes --]
Hello,
Thanks for the comments. Attached is the fixed version.
> attachment "sms-3.c.txt":
>
> > /* { dg-do compile } */
> > /* { dg-options "-O2 -fmodulo-sched -funroll-loops -dm" } */
> >
> > int X[100];
> > int Y[100];
> >
> > int
> > foo (int len, long *result)
> > {
> > int i;
> >
> > len = 1000;
> > long res = *result;
> > for (i = 0; i < len; i++)
> > res += X[i] * Y[i];
> >
> > *result = res;
> > }
> >
> > /* { dg-final { cleanup-rtl-dump "sms" } } */
>
> Better check that result is correct on some data, in addition to the fact
that
> the loop is sms'ed.
Done.
Re-tested on powerpc64-linux and SPU together with patch 2/2.
OK for mainline?
Revital
2007-11-28 Ayal Zaks <zaks@il.ibm.com>
Revital Eres <eres@il.ibm.com>
* modulo-sched.c (get_sched_window): Fix the direction of the
scheduling window and add dump info.
testsuite:
2007-11-27 Vladimir Yanovsky <yanov@il.ibm.com>
* gcc.dg/sms-3.c: New testcase.
(See attached file: sms-3.c.txt)(See attached file: patch_1_2_28.txt)
[-- Attachment #2: sms-3.c.txt --]
[-- Type: text/plain, Size: 525 bytes --]
/* { dg-do run } */
/* { dg-options "-O2 -fmodulo-sched -funroll-loops" } */
extern void abort (void);
int X[1000]={0};
int Y[1000]={0};
extern void abort (void);
int
foo (int len, long a)
{
int i;
long res = a;
len = 1000;
for (i = 0; i < len; i++)
res += X[i]* Y[i];
if (res != 601)
abort ();
}
int
main ()
{
X[0] = Y[1] = 2;
Y[0] = X[1] = 21;
X[2] = Y[3] = 3;
Y[2] = X[3] = 31;
X[4] = Y[5] = 4;
Y[4] = X[5] = 41;
foo (5, 3);
return 0;
}
[-- Attachment #3: patch_1_2_28.txt --]
[-- Type: text/plain, Size: 3560 bytes --]
Index: modulo-sched.c
===================================================================
--- modulo-sched.c (revision 130269)
+++ modulo-sched.c (working copy)
@@ -1343,8 +1343,9 @@
MAX (early_start, p_st + e->latency - (e->distance * ii));
if (dump_file)
- fprintf (dump_file, "pred st = %d; early_start = %d; ", p_st,
- early_start);
+ fprintf (dump_file,
+ "pred st = %d; early_start = %d; latency: %d",
+ p_st, early_start, e->latency);
if (e->data_type == MEM_DEP)
end = MIN (end, SCHED_TIME (v_node) + ii - 1);
@@ -1354,6 +1355,7 @@
}
start = early_start;
end = MIN (end, early_start + ii);
+ /* Schedule the node close to it's predecessors. */
step = 1;
if (dump_file)
@@ -1390,8 +1392,9 @@
s_st - e->latency + (e->distance * ii));
if (dump_file)
- fprintf (dump_file, "succ st = %d; late_start = %d;", s_st,
- late_start);
+ fprintf (dump_file,
+ "succ st = %d; late_start = %d; latency = %d",
+ s_st, late_start, e->latency);
if (e->data_type == MEM_DEP)
end = MAX (end, SCHED_TIME (v_node) - ii + 1);
@@ -1405,6 +1408,7 @@
}
start = late_start;
end = MAX (end, late_start - ii);
+ /* Schedule the node close to it's successors. */
step = -1;
if (dump_file)
@@ -1418,6 +1422,8 @@
{
int early_start = INT_MIN;
int late_start = INT_MAX;
+ int count_preds = 0;
+ int count_succs = 0;
start = INT_MIN;
end = INT_MAX;
@@ -1445,9 +1451,13 @@
- (e->distance * ii));
if (dump_file)
- fprintf (dump_file, "pred st = %d; early_start = %d;", p_st,
- early_start);
+ fprintf (dump_file,
+ "pred st = %d; early_start = %d; latency = %d",
+ p_st, early_start, e->latency);
+ if (e->type == TRUE_DEP && e->data_type == REG_DEP)
+ count_preds++;
+
if (e->data_type == MEM_DEP)
end = MIN (end, SCHED_TIME (v_node) + ii - 1);
}
@@ -1478,10 +1488,14 @@
s_st - e->latency
+ (e->distance * ii));
- if (dump_file)
- fprintf (dump_file, "succ st = %d; late_start = %d;", s_st,
- late_start);
+ if (dump_file)
+ fprintf (dump_file,
+ "succ st = %d; late_start = %d; latency = %d",
+ s_st, late_start, e->latency);
+ if (e->type == TRUE_DEP && e->data_type == REG_DEP)
+ count_succs++;
+
if (e->data_type == MEM_DEP)
start = MAX (start, SCHED_TIME (v_node) - ii + 1);
}
@@ -1492,6 +1506,16 @@
start = MAX (start, early_start);
end = MIN (end, MIN (early_start + ii, late_start + 1));
step = 1;
+ /* If there are more successors than predecessors schedule the
+ node close to it's successors. */
+ if (count_succs >= count_preds)
+ {
+ int old_start = start;
+
+ start = end - 1;
+ end = old_start - 1;
+ step = -1;
+ }
}
else /* psp is empty && pss is empty. */
{
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH 1/2][Modulo-sched] Fix the direction of the scheduling window
2007-11-21 18:33 ` Revital1 Eres
@ 2007-11-21 19:02 ` Revital1 Eres
0 siblings, 0 replies; 6+ messages in thread
From: Revital1 Eres @ 2007-11-21 19:02 UTC (permalink / raw)
To: Ayal Zaks; +Cc: Andrey Belevantsev, Alexander Monakov, gcc-patches
Ayal Zaks/Haifa/IBM wrote on 21/11/2007 17:37:20:
> Revital1 Eres/Haifa/IBM wrote on 20/11/2007 15:47:59:
>
> > Hello,
> >
> > When determining the scheduling window of a node all types of edges are
> > taken into account. Currently when a node has both predecessors and
> > successors it will be set close to it's predecessors. In fact it can
> > be that a node has only one successor with true dep edge but it will be
> > scheduled close to it's allegedly predecessor; because of the anti-dep
> > edge between the two nodes. Trying to avoid this confusion and reduce
the
> > life range of registers we choose to set the scheduled node close to
it's
> > predecessors or close to it's successors based on true deps edges only.
> >
> > This change makes SMS succeed on the attached testcase with
-funroll-loops
> > on SPU. The testcase was provided by Vladimir.
> >
> > Bootstrapped and tested together with the follow on patch (2/2) on ppc,
> > SPU and x86 with no new regressions.
> >
> > :ADDPATCH modulo-sched:
> >
> > OK for mainline?
>
> Yes, with minor comments below.
Thanks, I'll wait for the approval of patch 2/2 before committing the
fixed version; as patch 2/2 fixes a bug exposed when testing this patch.
Revital
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH 1/2][Modulo-sched] Fix the direction of the scheduling window
[not found] <OF6C5E5F37.898CB82F-ONC225739A.00535CD6-C225739A.0055D0E0@LocalDomain>
@ 2007-11-21 18:33 ` Revital1 Eres
2007-11-21 19:02 ` Revital1 Eres
2007-11-28 14:17 ` Revital1 Eres
1 sibling, 1 reply; 6+ messages in thread
From: Revital1 Eres @ 2007-11-21 18:33 UTC (permalink / raw)
To: Ayal Zaks; +Cc: Andrey Belevantsev, Alexander Monakov, gcc-patches
Ayal Zaks/Haifa/IBM wrote on 21/11/2007 17:37:20:
> Revital1 Eres/Haifa/IBM wrote on 20/11/2007 15:47:59:
>
> > Hello,
> >
> > When determining the scheduling window of a node all types of edges are
> > taken into account. Currently when a node has both predecessors and
> > successors it will be set close to it's predecessors. In fact it can
> > be that a node has only one successor with true dep edge but it will be
> > scheduled close to it's allegedly predecessor; because of the anti-dep
> > edge between the two nodes. Trying to avoid this confusion and reduce
the
> > life range of registers we choose to set the scheduled node close to
it's
> > predecessors or close to it's successors based on true deps edges only.
> >
> > This change makes SMS succeed on the attached testcase with
-funroll-loops
> > on SPU. The testcase was provided by Vladimir.
> >
> > Bootstrapped and tested together with the follow on patch (2/2) on ppc,
> > SPU and x86 with no new regressions.
> >
> > :ADDPATCH modulo-sched:
> >
> > OK for mainline?
>
> Yes, with minor comments below.
Thanks, I'll wait for the approval of patch 2/2 before committing the
fixed version; as patch 2/2 fixes a bug exposed when testing this patch.
Revital
^ permalink raw reply [flat|nested] 6+ messages in thread
* [PATCH 1/2][Modulo-sched] Fix the direction of the scheduling window
@ 2007-11-20 15:54 Revital1 Eres
0 siblings, 0 replies; 6+ messages in thread
From: Revital1 Eres @ 2007-11-20 15:54 UTC (permalink / raw)
To: Ayal Zaks; +Cc: Andrey Belevantsev, Alexander Monakov, gcc-patches
[-- Attachment #1: Type: text/plain, Size: 1261 bytes --]
Hello,
When determining the scheduling window of a node all types of edges are
taken into account. Currently when a node has both predecessors and
successors it will be set close to it's predecessors. In fact it can
be that a node has only one successor with true dep edge but it will be
scheduled close to it's allegedly predecessor; because of the anti-dep
edge between the two nodes. Trying to avoid this confusion and reduce the
life range of registers we choose to set the scheduled node close to it's
predecessors or close to it's successors based on true deps edges only.
This change makes SMS succeed on the attached testcase with -funroll-loops
on SPU. The testcase was provided by Vladimir.
Bootstrapped and tested together with the follow on patch (2/2) on ppc,
SPU and x86 with no new regressions.
:ADDPATCH modulo-sched:
OK for mainline?
Thanks,
Revital
2007-11-20 Ayal Zaks <zaks@il.ibm.com>
Revital Eres <eres@il.ibm.com>
* modulo-sched.c (get_sched_window): Fix the direction of the
scheduling window and add dump info.
testsuite:
2007-11-20 Vladimir Yanovsky <yanov@il.ibm.com>
* gcc.dg/sms-3.c: New testcase.
(See attached file: patch_win_dir_again.txt)(See attached file:
sms-3.c.txt)
[-- Attachment #2: patch_win_dir_again.txt --]
[-- Type: text/plain, Size: 3457 bytes --]
Index: modulo-sched.c
===================================================================
--- modulo-sched.c (revision 129721)
+++ modulo-sched.c (working copy)
@@ -1344,8 +1344,8 @@
MAX (early_start, p_st + e->latency - (e->distance * ii));
if (dump_file)
- fprintf (dump_file, "pred st = %d; early_start = %d; ", p_st,
- early_start);
+ fprintf (dump_file, "pred st = %d; early_start = %d; "
+ " latency: %d", p_st, early_start, e->latency);
if (e->data_type == MEM_DEP)
end = MIN (end, SCHED_TIME (v_node) + ii - 1);
@@ -1355,6 +1355,7 @@
}
start = early_start;
end = MIN (end, early_start + ii);
+ /* Schedule the node close to it's processors. */
step = 1;
if (dump_file)
@@ -1391,8 +1392,8 @@
s_st - e->latency + (e->distance * ii));
if (dump_file)
- fprintf (dump_file, "succ st = %d; late_start = %d;", s_st,
- late_start);
+ fprintf (dump_file, "succ st = %d; late_start = %d;"
+ " latency = %d", s_st, late_start, e->latency);
if (e->data_type == MEM_DEP)
end = MAX (end, SCHED_TIME (v_node) - ii + 1);
@@ -1406,6 +1407,7 @@
}
start = late_start;
end = MAX (end, late_start - ii);
+ /* Schedule the node close to it's successors. */
step = -1;
if (dump_file)
@@ -1419,6 +1421,8 @@
{
int early_start = INT_MIN;
int late_start = INT_MAX;
+ int count_preds = 0;
+ int count_succs = 0;
start = INT_MIN;
end = INT_MAX;
@@ -1446,9 +1450,12 @@
- (e->distance * ii));
if (dump_file)
- fprintf (dump_file, "pred st = %d; early_start = %d;", p_st,
- early_start);
+ fprintf (dump_file, "pred st = %d; early_start = %d;"
+ " latency = %d", p_st, early_start, e->latency);
+ if (e->type == TRUE_DEP && e->data_type == REG_DEP)
+ count_preds++;
+
if (e->data_type == MEM_DEP)
end = MIN (end, SCHED_TIME (v_node) + ii - 1);
}
@@ -1479,10 +1486,13 @@
s_st - e->latency
+ (e->distance * ii));
- if (dump_file)
- fprintf (dump_file, "succ st = %d; late_start = %d;", s_st,
- late_start);
+ if (dump_file)
+ fprintf (dump_file, "succ st = %d; late_start = %d;"
+ " latency = %d", s_st, late_start, e->latency);
+ if (e->type == TRUE_DEP && e->data_type == REG_DEP)
+ count_succs++;
+
if (e->data_type == MEM_DEP)
start = MAX (start, SCHED_TIME (v_node) - ii + 1);
}
@@ -1493,6 +1503,16 @@
start = MAX (start, early_start);
end = MIN (end, MIN (early_start + ii, late_start + 1));
step = 1;
+ /* If there are more successors than processors schedule the
+ node close to it's successors. */
+ if (count_succs >= count_preds)
+ {
+ int old_start = start;
+
+ start = end - 1;
+ end = old_start - 1;
+ step = -1;
+ }
}
else /* psp is empty && pss is empty. */
{
[-- Attachment #3: sms-3.c.txt --]
[-- Type: text/plain, Size: 332 bytes --]
/* { dg-do compile } */
/* { dg-options "-O2 -fmodulo-sched -funroll-loops -dm" } */
int X[100];
int Y[100];
int
foo (int len, long *result)
{
int i;
len = 1000;
long res = *result;
for (i = 0; i < len; i++)
res += X[i] * Y[i];
*result = res;
}
/* { dg-final { cleanup-rtl-dump "sms" } } */
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2007-11-30 20:28 UTC | newest]
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2007-11-21 17:24 ` [PATCH 1/2][Modulo-sched] Fix the direction of the scheduling window Ayal Zaks
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2007-11-30 22:19 ` Ayal Zaks
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2007-11-21 18:33 ` Revital1 Eres
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2007-11-28 14:17 ` Revital1 Eres
2007-11-20 15:54 Revital1 Eres
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